Combination lock



FIG. 1 is a perspective view of a combination lock showing our newdesign;

FIG. 2 is a front elevational view thereof, the rear elevational viewbeing a mirror image thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Any broken lines in the drawings are for illustrative purposes only andform no part of the claimed design.

The ornamental design for a combination lock, as shown and described.